Enhancing Efficiency and Stability of Organic Solar Cells by UV Absorbent

被引：28
作者：
Qin, Meng [1 ]
Cheng, Pei [1 ]
Mai, Jiangquan [2 ]
Lau, Tsz-Ki [2 ]
Zhang, Qianqian [3 ]
Wang, Jiayu [1 ]
Yan, Cenqi [1 ]
Liu, Kuan [1 ]
Su, Chun-Jen [4 ]
You, Wei [3 ]
Lu, Xinhui [2 ]
Zhan, Xiaowei [1 ]
机构：
[1] Peking Univ, Minist Educ, Coll Engn, Dept Mat Sci & Engn,Key Lab Polymer Chem & Phys, Beijing 100871, Peoples R China
[2] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[3] Univ North Carolina Chapel Hill, Dept Chem, Chapel Hill, NC 27599 USA
[4] Natl Synchrotron Radiat Res Ctr, Hsinchu, Taiwan
来源：
SOLAR RRL | 2017年 / 1卷 / 12期
关键词：
organic solar cells; stability; nonfullerene; UV absorbent; additives; POWER CONVERSION EFFICIENCY; BULK HETEROJUNCTION; ELECTRON-ACCEPTORS; POLYMER; PERFORMANCE; FULLERENE; MORPHOLOGY; ADDITIVES; SEPARATION; ENABLES;
D O I：
10.1002/solr.201700148
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A new type of high boiling-point additive, UV absorbent benzophenone (BP), is reported which can simultaneously improve the efficiency and stability of fullerene and nonfullerene organic solar cells (OSCs). After the addition of BP, the power conversion efficiencies (PCEs) of nonfullerene OSCs based on FTAZ: ITIC-Th is increased from 8.5 to 9.4%, and is further increased to 10.3% by employing inverted geometry. Meanwhile, the photo-stability of nonfullerene OSC is improved. After illumination-aging, the OSCs with BP preserve 79% of the original PCEs, while the OSCs without additives or with 1,8-diiodooctane only preserve 65 and 58% of their original PCEs, respectively. In addition, BP can also work in fullerene-based OSCs. After the addition of BP, the efficiency and photo-stability of the OSCs based on PTB7-Th: PC71BM are simultaneously enhanced.
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页数：7
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